Andrew: Just my two cents, but have you tried some of the boutique amps? For the price of some of the mass-market stuff (or sometimes for less), you can get hand-made hard-wired stuff that'll blow the more common stuff away quality and tone-wise. For instance if you're into the vintage Fender vibe, Victoria, Dumble, Koch, Straub, etc. make a super nice amps. For a Marshall sound, Germino, TopHat, Straub, Splawn, etc. are hard to beat.
My point here is that it is ultimately your money and your choice. Play the hell out of EVERYTHING before you spend.
I've spent over 25 years trying to find the right tone myself, and I think I'm finally there. I've settled on a modded silverface '79 Fender Twin Reverb 2x12 combo (in a Sultone custom mahogany/maple oversize cab with Weber VST JBL D-120 clones) for clean stuff and a Custom Straub Cantus 50W Marshall plexi-style head and custom 2X12 cab for the dirty stuff. See my thread in the Misc. section of the club for pix and info if interested.
Whatever you go with, good luck and enjoy!
(Message edited by kmh364 on February 11, 2005)